bgp/flowspec/src/main/java/org/opendaylight/protocol/bgp/flowspec/extended/communities/TrafficMarkingEcHandler.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.protocol.bgp.flowspec.extended.communities;
  10
  11 import com.google.common.base.Preconditions;
  12 import io.netty.buffer.ByteBuf;
  13 import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
  14 import org.opendaylight.protocol.bgp.parser.BGPParsingException;
  15 import org.opendaylight.protocol.bgp.parser.spi.extended.community.ExtendedCommunityParser;
  16 import org.opendaylight.protocol.bgp.parser.spi.extended.community.ExtendedCommunitySerializer;
  17 import org.opendaylight.protocol.util.ByteBufWriteUtil;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev150807.Dscp;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev150807.traffic.marking.extended.community.TrafficMarkingExtendedCommunity;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev150807.traffic.marking.extended.community.TrafficMarkingExtendedCommunityBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev150807.update.attributes.extended.communities.extended.community.TrafficMarkingExtendedCommunityCaseBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.extended.community.ExtendedCommunity;
  23
  24 public class TrafficMarkingEcHandler implements ExtendedCommunityParser, ExtendedCommunitySerializer {
  25
  26     private static final int TYPE = 128;
  27
  28     private static final int SUBTYPE = 9;
  29
  30     private static final int RESERVED = 5;
  31
  32     @Override
  33     public void serializeExtendedCommunity(final ExtendedCommunity extendedCommunity, final ByteBuf byteAggregator) {
  34         Preconditions.checkArgument(extendedCommunity instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev150807.TrafficMarkingExtendedCommunity,
  35                 "The extended community %s is not TrafficMarkingExtendedCommunity type.", extendedCommunity);
  36         final TrafficMarkingExtendedCommunity trafficMarking = ((org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.flowspec.rev150807.TrafficMarkingExtendedCommunity) extendedCommunity).getTrafficMarkingExtendedCommunity();
  37         byteAggregator.writeZero(RESERVED);
  38         ByteBufWriteUtil.writeUnsignedByte(trafficMarking.getGlobalAdministrator().getValue(), byteAggregator);
  39     }
  40
  41     @Override
  42     public int getType(final boolean isTransitive) {
  43         //traffic-rate is transitive only
  44         return TYPE;
  45     }
  46
  47     @Override
  48     public int getSubType() {
  49         return SUBTYPE;
  50     }
  51
  52     @Override
  53     public ExtendedCommunity parseExtendedCommunity(final ByteBuf buffer) throws BGPDocumentedException, BGPParsingException {
  54         buffer.skipBytes(RESERVED);
  55         final Dscp dscp = new Dscp(buffer.readUnsignedByte());
  56         return new TrafficMarkingExtendedCommunityCaseBuilder().setTrafficMarkingExtendedCommunity(
  57                 new TrafficMarkingExtendedCommunityBuilder()
  58                     .setGlobalAdministrator(dscp).build()).build();
  59     }
  60
  61 }